code: def testEmpty(self):
      self.assertComputeFails(IFFT(normalize=False), cvec([]))
  
file_path: essentia/test/src/unittests/standard/test_ifft.py
imports: from essentia_test import *
  import math
label_desc: Use image node_id 4 for calling the TestIFFT obj's underlying member method code with example usage: obj.testEmpty() without return types